Method for manufacturing fuel cell, fuel cell, and electronic apparatus

Abstract

A method for manufacturing a fuel cell having a structure in which a positive electrode and a negative electrode are opposed with a proton conductor therebetween and an enzyme is immobilized on the positive electrode and/or the negative electrode includes the step of immobilizing the enzyme on the positive electrode and/or the negative electrode with a photo-curable resin and/or a thermosetting resin. A photo-curable resin and/or a thermosetting resin may be further laminated on the photo-curable resin and/or the thermosetting resin which have immobilized the enzyme.

1 . A method for manufacturing a fuel cell having a structure in which a positive electrode and a negative electrode are opposed with a proton conductor therebetween and an enzyme is immobilized on the positive electrode and/or the negative electrode, the method comprising:
 immobilizing the enzyme on the positive electrode and/or the negative electrode with a photo-curable resin and/or a thermosetting resin.   
   
   
       2 . The method for manufacturing a fuel cell according to  claim 1 ,
 wherein the photo-curable resin is a water-soluble photo-curable resin, and   the thermosetting resin is a water-soluble thermosetting resin.   
   
   
       3 . The method for manufacturing a fuel cell according to  claim 1 , including
 applying a solution containing the enzyme and the photo-curable resin to the positive electrode and/or the negative electrode, and   curing the photo-curable resin through light irradiation.   
   
   
       4 . The method for manufacturing a fuel cell according to  claim 1 , including
 immobilizing the enzyme on the positive electrode and/or the negative electrode with the photo-curable resin and/or the thermosetting resin, and   laminating a photo-curable resin and/or a thermosetting resin on the photo-curable resin and/or the thermosetting resin.   
   
   
       5 . The method for manufacturing a fuel cell according to  claim 1 , wherein an electron mediator besides the enzyme is immobilized on the positive electrode and/or the negative electrode. 
   
   
       6 . The method for manufacturing a fuel cell according to  claim 5 , including
 immobilizing an oxygen-reducing enzyme on the positive electrode with the photo-curable resin and/or the thermosetting resin,   immobilizing a coenzyme-oxidizing enzyme which returns a coenzyme reduced along with oxidation of monosaccharides to an oxidized form and which passes electrons to the negative electrode through the electron mediator on the negative electrode with the photo-curable resin and/or the thermosetting resin, and   an oxidizing enzyme which facilitates oxidation of the monosaccharides so as to decompose is immobilized thereon with the photo-curable resin and/or the thermosetting resin, while the oxidizing enzyme immobilized with the photo-curable resin and/or the thermosetting resin is formed into the shape of a plurality of islands at that time.   
   
   
       7 . The method for manufacturing a fuel cell according to  claim 6 ,
 wherein the oxidized form of the coenzyme is NAD + , and   the coenzyme-oxidizing enzyme is diaphorase.   
   
   
       8 . The method for manufacturing a fuel cell according to  claim 6 ,
 wherein the oxidizing enzyme is NAD + -dependent glucose dehydrogenase.   
   
   
       9 . A fuel cell comprising a structure in which
 a positive electrode and a negative electrode are opposed with a proton conductor therebetween and   an enzyme is immobilized on the positive electrode and/or the negative electrode,   wherein the enzyme is immobilized on the positive electrode and/or the negative electrode with a photo-curable resin and/or a thermosetting resin.   
   
   
       10 . The fuel cell according to  claim 9 ,
 wherein an oxygen-reducing enzyme is immobilized on the positive electrode with the photo-curable resin and/or the thermosetting resin,   a coenzyme-oxidizing enzyme which returns a coenzyme reduced along with oxidation of monosaccharides to an oxidized form and which passes electrons to the negative electrode through an electron mediator is immobilized on the negative electrode with the photo-curable resin and/or the thermosetting resin, and   an oxidizing enzyme which facilitates oxidation of the monosaccharides so as to decompose is immobilized thereon with the photo-curable resin and/or the thermosetting resin, while the oxidizing enzyme immobilized with the photo-curable resin and/or the thermosetting resin is formed into the shape of a plurality of islands.   
   
   
       11 . An electronic apparatus including at least one fuel cell, at least one of the fuel cells comprising a structure in which
 a positive electrode and a negative electrode are opposed with a proton conductor therebetween and   an enzyme is immobilized on the positive electrode and/or the negative electrode,   wherein the enzyme is immobilized on the positive electrode and/or the negative electrode with a photo-curable resin and/or a thermosetting resin.   
   
   
       12 . A method for manufacturing a fuel cell having a structure in which a positive electrode and a negative electrode are opposed with a proton conductor therebetween and an enzyme is immobilized on the positive electrode and/or the negative electrode, the method comprising:
 immobilizing the enzyme on the positive electrode and/or the negative electrode with an immobilizing material; and   laminating a photo-curable resin and/or a thermosetting resin on the immobilizing material.   
   
   
       13 . The method for manufacturing a fuel cell according to  claim 12 , wherein the immobilizing material comprises a polyion complex. 
   
   
       14 . A fuel cell comprising a structure in which
 a positive electrode and a negative electrode are opposed with a proton conductor therebetween and   an enzyme is immobilized on the positive electrode and/or the negative electrode,   wherein the enzyme is immobilized on the positive electrode and/or the negative electrode with an immobilizing material, and   a photo-curable resin and/or a thermosetting resin is laminated on the immobilizing material.   
   
   
       15 . An electronic apparatus including at least one fuel cell, at least one of the fuel cells comprising a structure in which
 a positive electrode and a negative electrode are opposed with a proton conductor therebetween and   an enzyme is immobilized on the positive electrode and/or the negative electrode,   wherein the enzyme is immobilized on the positive electrode and/or the negative electrode with an immobilizing material, and   a photo-curable resin and/or a thermosetting resin is laminated on the immobilizing material.